JPH03620Y2 - - Google Patents
Info
- Publication number
- JPH03620Y2 JPH03620Y2 JP1069386U JP1069386U JPH03620Y2 JP H03620 Y2 JPH03620 Y2 JP H03620Y2 JP 1069386 U JP1069386 U JP 1069386U JP 1069386 U JP1069386 U JP 1069386U JP H03620 Y2 JPH03620 Y2 JP H03620Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve body
- valve
- auxiliary
- actuator
- main valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000012530 fluid Substances 0.000 claims description 11
- 238000004891 communication Methods 0.000 claims description 9
- 230000005284 excitation Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Magnetically Actuated Valves (AREA)
Description
【考案の詳細な説明】
産業上の利用分野
この考案は電磁弁、詳しくは動作初期の通路断
面を小さく制限し、所定時間経過後の通路断面を
大きく確保する電磁弁に関する。[Detailed Description of the Invention] Industrial Application Field This invention relates to a solenoid valve, and more particularly, to an electromagnetic valve that limits a passage cross section to a small value at the initial stage of operation and secures a large passage cross section after a predetermined period of time has elapsed.
従来の技術
大型の湯わかし器や、工場用のボイラーなどの
ガスバーナの着火時に、ガスを大量に流すと大き
い着火音が生じる。また、1ないし数回の着火操
作で適正な着火が得られない場合には、着火時の
爆発衝撃によつて器具を破損させるおそれがあ
る。BACKGROUND TECHNOLOGY When igniting a gas burner such as a large water heater or a factory boiler, a large ignition noise is produced when a large amount of gas flows through the ignition. Furthermore, if proper ignition cannot be achieved after one or several ignition operations, the appliance may be damaged by the explosion impact upon ignition.
このような見地から、着火操作時のガス流量、
つまり電磁弁開放動作初期のガス流量を小さく制
限し、所定時間経過後に流量を増大させる流量制
御が要請される。 From this point of view, the gas flow rate during ignition operation,
In other words, flow control is required that limits the gas flow rate to a small value at the beginning of the electromagnetic valve opening operation and increases the flow rate after a predetermined period of time has elapsed.
従来、上述の流量制御を行うために通路断面の
異なる大小2つの通路を設け、両通路にそれぞれ
電磁弁を介設し、動作初期には小通路の電磁弁を
開放して小量のガスを放出して着火操作を行い、
所定時間経過後に大通路の電磁弁を開放して所定
の流量による燃焼を得る第1の制御方式と、1つ
の通路に1つの電磁弁を介設し、この電磁弁の開
弁度を電子比例制御によつて調節する第2の制御
方式が知られている。 Conventionally, in order to perform the above-mentioned flow rate control, two passages with different cross-sections were provided, each with a solenoid valve, and at the beginning of operation, the solenoid valve in the small passage was opened to allow a small amount of gas to flow through. Release it and perform the ignition operation,
The first control method opens the solenoid valve in the large passage after a predetermined period of time to achieve combustion at a predetermined flow rate, and the first control method involves interposing one solenoid valve in one passage and controlling the degree of opening of this solenoid valve using electronic proportionality. A second control method is known, which is regulated by control.
考案が解決しようとする問題点
しかし、上記第1の制御方式では配管系が複雑
化し、2つの電磁弁を必要とするため部品点数が
多くなる上、大形になつてスペース上の制約をう
け、しかもコスト高になるなどの問題点を有して
いる。Problems that the invention aims to solve However, the first control method described above requires a complicated piping system, requires two solenoid valves, which increases the number of parts, and is large, resulting in space constraints. , and has problems such as high cost.
また、第2の制御方式は配管系の簡略化と部品
点数の低減化および小形化を達成することができ
るけれども、きわめて高価格である欠点を有して
いる。 Further, although the second control method can simplify the piping system, reduce the number of parts, and reduce the size, it has the drawback of being extremely expensive.
この考案は上記従来の問題点を解決するために
なされたもので、構造の簡略化と部品点数の低減
および小形化を達成し、しかも低価格化を図るこ
とができる電磁弁を提供することを目的とする。 This invention was made in order to solve the above-mentioned conventional problems, and aims to provide a solenoid valve that can simplify the structure, reduce the number of parts, and reduce the size, as well as reduce the price. purpose.
問題点を解決するめの手段
この考案に係る電磁弁は弁箱内の弁座に対設し
かつオリフイスが形成された主弁体と、該主弁体
のオリフイスに対設される補助弁体と、上記主弁
体を固定し上記補助弁体が摺動自在に外外嵌され
た弁棒とを有し、該弁棒の一端と上記補助弁体の
間に介設されて両者を離間させかつ主弁体を弁座
側に付勢する小スプリングとを有し、上記補助弁
体を作動させる電磁石と、該電磁石と補助弁体の
間に介設され上記小スプリングに打ち勝つて補助
弁体を主弁体に当接させ上記オリフイスを閉成す
る大スプリングと、上記弁棒の他端側に配設され
て上記主弁体を作動させるアクチユエータとを備
え、該アクチユエータのロツド部材に弁座の下流
側弁箱内とアクチユエータの内部とを連通させる
連通路が設けられ、上記電磁石の励磁により上記
補助弁体が開弁された時、上記通路からアクチユ
エータに導入される流体圧で上記主弁体が開弁さ
れた時、上記通路からアクチユエータに導入され
る流体圧で上記主弁体が開弁されるように構成し
ている。Means for Solving the Problems The solenoid valve according to this invention includes a main valve body that is disposed opposite to a valve seat in a valve box and has an orifice formed therein, and an auxiliary valve body that is disposed opposite to the orifice of the main valve body. , a valve stem having the main valve body fixed thereon and the auxiliary valve body being slidably fitted on the outside thereof, the valve stem being interposed between one end of the valve stem and the auxiliary valve body to separate the two; and a small spring that biases the main valve element toward the valve seat side, an electromagnet that operates the auxiliary valve element, and an auxiliary valve element that is interposed between the electromagnet and the auxiliary valve element to overcome the small spring. a large spring that contacts the main valve body and closes the orifice; and an actuator that is disposed on the other end of the valve rod and operates the main valve body, and a valve seat is attached to the rod member of the actuator. A communication passage is provided that communicates the inside of the downstream valve box with the inside of the actuator, and when the auxiliary valve body is opened by the excitation of the electromagnet, the main valve is controlled by the fluid pressure introduced from the passage into the actuator. When the main valve body is opened, the main valve body is opened by fluid pressure introduced from the passage into the actuator.
作 用
この考案においては、電磁石を励磁することで
補助弁体が開弁して主弁体のオリフイスを開放
し、断面の小さい通路を開通させる。ついで連通
路を介して導入される流体圧でアクチユエータを
作動させ、主弁体を開弁して弁座を開放し、断面
の大きい通路を開通させる。Function In this invention, the auxiliary valve element opens by energizing the electromagnet, opens the orifice of the main valve element, and opens a passage with a small cross section. Next, the actuator is actuated by the fluid pressure introduced through the communication passage, the main valve body is opened, the valve seat is opened, and the passage having a large cross section is opened.
実施例
第1図はこの考案の一実施例を示す縦断正面図
であり、図において1は弁箱、2は主弁体、3は
補助弁体、4は弁棒、5はアクチユエータ、6は
電磁石を示す。Embodiment FIG. 1 is a longitudinal sectional front view showing an embodiment of this invention, in which 1 is a valve box, 2 is a main valve body, 3 is an auxiliary valve body, 4 is a valve stem, 5 is an actuator, and 6 is a valve body. Showing an electromagnet.
弁箱1は一側に入口1Aを、他側に出口1Bを
それぞれ有し、中央部に弁座1Cを形成してい
る。 The valve box 1 has an inlet 1A on one side and an outlet 1B on the other side, and forms a valve seat 1C in the center.
主弁体2は弁棒4の下端に固定されて弁座1C
に対して接離可能に設けられ、複数のオリフイス
7を形成している。 The main valve body 2 is fixed to the lower end of the valve stem 4 and the valve seat 1C
A plurality of orifices 7 are formed.
補助弁体3は、その上部が電磁石6のボビン6
Aに嵌入され、下部が弁棒4に摺動自在に外嵌さ
れている。そして、弁棒4と補助弁体3との間に
両者3,4を離間させかつ主弁体2を弁座1C側
に付勢する小スプリング11を介設している。 The auxiliary valve body 3 has a bobbin 6 with an electromagnet 6 at its upper part.
A, and the lower part is slidably fitted onto the valve stem 4. A small spring 11 is interposed between the valve stem 4 and the auxiliary valve body 3 to separate them 3 and 4 and urge the main valve body 2 toward the valve seat 1C.
補助弁体3と電磁石6の鉄心6Cとの間に大ス
プリング8が介設され、この大スプリング8のば
ね力は上記小スプリング11のばね力よりも大き
く設定されている。したがつて、補助弁体3の下
端環状周壁部は大スプリング8の付勢により小ス
プリング11の付勢に打ち勝つて主弁体2の上面
に当接した閉状態、つまりオリフイス7を閉成し
た状態に保持されている。 A large spring 8 is interposed between the auxiliary valve body 3 and the iron core 6C of the electromagnet 6, and the spring force of the large spring 8 is set to be larger than the spring force of the small spring 11. Therefore, the lower end annular peripheral wall portion of the auxiliary valve body 3 overcomes the bias of the small spring 11 due to the bias of the large spring 8 and is brought into a closed state where it contacts the upper surface of the main valve body 2, that is, the orifice 7 is closed. maintained in the state.
アクチユエータ5は、この実施例ではダイヤフ
ラム装置によつて構成され、主弁体2、補助弁体
3および弁棒4と同心状に弁箱1の下面に取付け
られている。そして、ダイヤフラム5Aによつて
上室5Cと下室5Bとに仕切られ、ダイヤフラム
5Aを貫通してこれにねじ締め連結されたロツド
部材13を有し、該ロツド部材13に連通路10
を形成し、上室5Cにスプリング5Dを介装して
いる。 In this embodiment, the actuator 5 is constituted by a diaphragm device, and is attached to the lower surface of the valve body 1 concentrically with the main valve body 2, the auxiliary valve body 3, and the valve stem 4. It is partitioned into an upper chamber 5C and a lower chamber 5B by a diaphragm 5A, and has a rod member 13 that passes through the diaphragm 5A and is connected to it with a screw.
A spring 5D is interposed in the upper chamber 5C.
ロツド部材13の上方突出部は弁箱1内に摺動
自在に嵌入されている。したがつて、連通路10
を介して弁箱1における弁座1Cの下流側とアク
チユエータ5の下室5Bとが連通している。ま
た、上室5Cは孔5aを介して大気に連通してい
る。図中6Bは電磁コイル、9はシール部材を示
す。 The upwardly protruding portion of the rod member 13 is slidably fitted into the valve body 1. Therefore, the communication path 10
The downstream side of the valve seat 1C in the valve body 1 and the lower chamber 5B of the actuator 5 communicate with each other via the valve body 1. Further, the upper chamber 5C communicates with the atmosphere via the hole 5a. In the figure, 6B indicates an electromagnetic coil, and 9 indicates a seal member.
つぎに上記構成の動作を説明する。 Next, the operation of the above configuration will be explained.
電磁石6の電磁コイル6Bが励磁されると、大
スプリング8のばね力に抗して補助弁体3が仮想
線Xで示すように鉄心6Cに吸着された開弁状態
になつて、主弁体2のオリフイス7が開放され
る。したがつて、通路断面積の小さいオリフイス
7を通過して小量の流体(例えばガス)が出口1
Bから導出される。 When the electromagnetic coil 6B of the electromagnet 6 is excited, the auxiliary valve body 3 is attracted to the iron core 6C as shown by the imaginary line X to open the valve against the spring force of the large spring 8, and the main valve body No. 2 orifice 7 is opened. Therefore, a small amount of fluid (for example, gas) passes through the orifice 7 with a small passage cross-sectional area and enters the outlet 1.
It is derived from B.
このように、補助弁体3が開弁されても、小ス
プリング11のばね力により主弁体2は弁座1C
を閉成している。 In this way, even if the auxiliary valve body 3 is opened, the main valve body 2 is held against the valve seat 1C by the spring force of the small spring 11.
has been closed.
一方、補助弁体3が開弁されると同時に、流体
は連通路10に流入し、ここからアクチユエータ
5の下室5Bに吐き出され、下室5Bを次第に高
圧化させる。 On the other hand, at the same time as the auxiliary valve body 3 is opened, fluid flows into the communication passage 10 and is discharged from there into the lower chamber 5B of the actuator 5, thereby gradually increasing the pressure in the lower chamber 5B.
所定の時間が経過すると、下室5Bの圧力がス
プリング5Dのばね力に打ち勝つてダイヤフラム
5Aを押し上げ、ロツド部材13で弁棒4と主弁
体2を押し上げて弁座1Cを開放する。したがつ
て、通路断面積の大きい弁座1Cの内周を通過し
て大量の流体が出口1Bから導出される。 After a predetermined period of time has elapsed, the pressure in the lower chamber 5B overcomes the spring force of the spring 5D to push up the diaphragm 5A, and the rod member 13 pushes up the valve stem 4 and main valve body 2 to open the valve seat 1C. Therefore, a large amount of fluid passes through the inner periphery of the valve seat 1C, which has a large passage cross-sectional area, and is led out from the outlet 1B.
このように、補助弁体3が開弁された時点か
ら、主弁体2が開弁される間に例えば着火操作を
行うことで、大きい着火音の発生や着火時の爆発
衝撃による器具の破損等を防止できる。 In this way, for example, by performing the ignition operation between the time when the auxiliary valve body 3 is opened and the main valve body 2 is opened, it is possible to prevent the occurrence of a loud ignition sound or damage to the appliance due to the explosion impact at the time of ignition. etc. can be prevented.
なお、補助弁体3が開弁されてオリフイス7が
開放された時点から、主弁体2が上昇して弁座1
Cを開放するまでの応答時間は、スプリング5D
のばね定数、連通路10の通路断面積および孔5
aの孔径等を変更することによつて任意に調整で
きる。 Note that from the time when the auxiliary valve body 3 is opened and the orifice 7 is opened, the main valve body 2 is raised and the valve seat 1 is opened.
The response time until C is released is spring 5D.
spring constant, passage cross-sectional area of communication passage 10, and hole 5
It can be arbitrarily adjusted by changing the hole diameter of a.
考案の効果
以上説明したように、この考案によれば、動作
初期において補助弁体を開弁し、主弁体に形成さ
れているオリフイスを介して小量の流体を通過さ
せたのち、通過流体の一部を連通路からアクチユ
エータに導入してアクチユエータを作動させ、こ
れによつて主弁体を開弁して大量の流体を通過さ
せるように構成しているので、配管系の単一化に
よる構造の簡略化が達成され、小形化と低価格化
が実現されるなどの利点を有する。Effects of the invention As explained above, according to this invention, the auxiliary valve element is opened at the initial stage of operation, and after a small amount of fluid passes through the orifice formed in the main valve element, the passing fluid is A part of the fluid is introduced from the communication path into the actuator to operate the actuator, which opens the main valve body and allows a large amount of fluid to pass through. It has advantages such as a simplified structure, smaller size, and lower cost.
第1図はこの考案の一実施例を示す縦断正面図
である。
1……弁箱、1C……弁座、2……主弁体、3
……補助弁体、4……弁棒、5……アクチユエー
タ、6……電磁石、7……オリフイス、8……大
スプリング、10……連通路、11……小スプリ
ング、13……ロツド部材。
FIG. 1 is a longitudinal sectional front view showing an embodiment of this invention. 1... Valve box, 1C... Valve seat, 2... Main valve body, 3
... Auxiliary valve body, 4 ... Valve stem, 5 ... Actuator, 6 ... Electromagnet, 7 ... Orifice, 8 ... Large spring, 10 ... Communication path, 11 ... Small spring, 13 ... Rod member .
Claims (1)
れた主弁体と、該主弁体のオリフイスに対設され
る補助弁体と、上記主弁体を固定し上記補助弁体
が摺動自在に外嵌された弁棒とを有し、該弁棒の
一端と上記補助弁体の間に介設されて両者を離間
させかつ主弁体を弁座側に付勢する小スプリング
とを有し、上記補助弁体を作動させる電磁石と、
該電磁石と補助弁体の間に介設され上記小スプリ
ングに打ち勝つて補助弁体を主弁体に当接させ上
記オリフイスを閉成する大スプリングと、上記弁
棒の他端側に配設されて上記主弁体を作動させる
アクチユエータとを備え、該アクチユエータのロ
ツド部材に弁座の下流側弁箱内とアクチユエータ
の内部とを連通させる連通路が設けられ、上記電
磁石の励磁により上記補助弁体が開弁された時、
上記連通路からアクチユエータに導入される流体
圧で上記主弁体が開弁されるように構成されてい
ることを特徴とする電磁弁。 A main valve body is provided opposite to the valve seat in the valve box and has an orifice formed therein, an auxiliary valve body is provided opposite to the orifice of the main valve body, and the main valve body is fixed, and the auxiliary valve body is slidable. a small spring having a movably fitted valve stem, which is interposed between one end of the valve stem and the auxiliary valve body to separate the two and urge the main valve body toward the valve seat; an electromagnet that operates the auxiliary valve body;
a large spring interposed between the electromagnet and the auxiliary valve body to overcome the small spring and bring the auxiliary valve body into contact with the main valve body to close the orifice; and a large spring disposed at the other end of the valve stem. and an actuator for operating the main valve body, and a communication path is provided in the rod member of the actuator to communicate the inside of the valve box on the downstream side of the valve seat with the inside of the actuator, and the auxiliary valve body is actuated by the excitation of the electromagnet. When the valve was opened,
A solenoid valve characterized in that the main valve body is configured to be opened by fluid pressure introduced from the communication path to an actuator.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1069386U JPH03620Y2 (en) | 1986-01-27 | 1986-01-27 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1069386U JPH03620Y2 (en) | 1986-01-27 | 1986-01-27 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS62122982U JPS62122982U (en) | 1987-08-04 |
JPH03620Y2 true JPH03620Y2 (en) | 1991-01-10 |
Family
ID=30797224
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1069386U Expired JPH03620Y2 (en) | 1986-01-27 | 1986-01-27 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH03620Y2 (en) |
-
1986
- 1986-01-27 JP JP1069386U patent/JPH03620Y2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS62122982U (en) | 1987-08-04 |
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